<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>table1</title>
  <style>
    table {
      border: 1px solid #ededed;
      /* 边框合并 */
      border-collapse: collapse;
      /* text-align: left; */
    }

    tr td {
      text-align: center;
      border: 1px solid #ededed;
      width: 40px;
      height: 40px;
    }
  </style>
</head>

<body>
  <table>
    <tbody>
      <tr>
        <!-- 合并列 td/th 属性colspan -->
        <!-- 合并行 th/td 属性 rowspan -->
        <td colspan="3">11</td>
        <!-- <td>12</td>
        <td>13</td> -->
        <td>14</td>
      </tr>
      <tr>
        <td colspan="3">21</td>
        <td>22</td>
        <!-- <td>23</td>
        <td>24</td> -->
      </tr>
      <tr>
        <td rowspan="2">31</td>
        <td>32</td>
        <td>33</td>
        <td>34</td>
      </tr>
      <tr>
        <!-- <td>41</td> -->
        <td>42</td>
        <td>43</td>
        <td>44</td>
      </tr>

    </tbody>

  </table>
</body>

</html>